The reluctivity matrix is obtained by using the trigonometric function transformation and the form of coefficient matrix is simplified.
该方法适用于任意阶多项式描述
线的非线性谐波电场问 
的求解，并提高了计算的精
。
The reluctivity matrix is obtained by using the trigonometric function transformation and the form of coefficient matrix is simplified.
该方法适用于任意阶多项式描述线的非线性谐波电场问 的求解，并提高了计算的精。
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